4－十二烷基二亚乙基三胺的合成

４－十二烷基二亚乙基三胺的合成史真，范乃丽，赵莉（西北大学化学系西安７１００６９））（陕西教育学院化学系西安）关键词咪唑啉，十二烷基二亚乙基三胺，合成４－十二烷基二亚乙基三胺作为一种表面活性剂在废水处理、医药卫生等方面有广泛用途，可以从废水中除去痕量...     

合成异丙基－4－氯苯酮肟－O－（3－苯氧基苄基）醚的改进法

合成异丙基－４－氯苯酮肟－Ｏ－（３－苯氧基苄基）醚的改进法俞明兴（安徽大学化学系，合肥，２３００３９）８０年代以来，文献相继报道了一类新型的拟除虫菊酯，即烷基芳基酮肟－氧苯醚类化合物￣［１－３］。这类化合物，虽然在结构上不属于一般拟除虫菊酯的母体结构...     

1－苯基－3－甲基－4－（a－呋喃甲酰基）－5－吡唑酮与中性萃取剂协同萃取镱的研究

研究了１－苯基３－甲基－４－（呋喃甲酰基）－５－吡唑酮（ＨＡ）萃取镱及其分别与丁基辛基亚砜（ＢＯＳＯ）、戊基已基亚砜（ＰＨＳＯ）、乙基十二烷基亚砜（ＥＤＳＯ）、二苯亚砜（ＤＰＳＯ）和ＴＢＰ协同萃取镱的行为。协萃配合物的组成为ＹｂＡ＿３·Ｂ，ＨＡ的萃取平衡常数为—５．６４±０．０４，中性萃取剂的协萃能力比单独萃取时高３～４个数量级，协萃效果明显。     

2－烷基环戊－2－烯酮衍生物的合成及抗炎活性研究

２－烷基环戊－２－烯酮衍生物的合成及抗炎活性研究齐传民计志忠，李玉兰，王彪（北京农业大学应用化学系，北京，１０００９４）（沈阳药科大学）关键词环戊烯酮衍生物，β－氨基甲基酮，Ｍａｎｎｉｃｈ反应，缩合反应，抗炎活性目前，许会抗炎药物是芳香酸类比合物，它...     

N－正丁基，N－正辛基乙酰胺合成方法的改进

Ｎ－正丁基，Ｎ－正辛基乙酰胺合成方法的改进徐凡，曹正白，徐利英，陈克潜（苏州大学化学系，２１５００６）Ｎ，Ｎ－二烷基酰胺是重要的有机合成原料，是医药、农药的中间体，也可作萃取剂及溶剂。Ｎ原子上二个烷基相同的二取代酰胺合成比较方便，实验室中一般是采用酰...     

铕（Ⅲ）－β－二酮－4，4＇－联吡啶－N，N＇－二氧化物三元配合物的合成与表征

铕（Ⅲ）－β－二酮－４，４＇－联吡啶－Ｎ，Ｎ＇－二氧化物三元配合物的合成与表征林惠文，朱文祥（海南师范学院化学系，海口，５７１１５８）（北京师范大学化学系，北京，１００８７５）关键词铕（Ⅲ），４，４＇－联吡啶－Ｎ，Ｎ＇－二氧化物，β－二酮，三元配合物...     

邻羟基萘基荧光酮－DDMBA光度法测定微量锗

邻羟基萘基荧光酮－ＤＤＭＢＡ光度法测定微量锗冯永兰，邝代治（衡阳师范专科学校化学系衡阳，４２１００８）关键词：分光光度法，锗，邻羟基萘基荧光酮，溴化十二烷基二甲基苄铵苯基荧光酮类试剂应用于锗的测定已有报导￣［１－６］。但邻羟基萘基荧光酮（β－ＨＮＦ）...     

2－乙基－1－（α－呋喃基）－1－戊烯－4－炔－3醇的合成

２－乙基－１－（α－呋喃基）－１－戊烯－４－炔－３醇的合成肖蓉，孙悦（成都科技大学化学系６１００６５）涂君俐（中国科学院成都有机化学研究所，６１００４１）蚊香和电热片是拟除虫菊醋类药剂，也是家庭卫生用药的代表性剂型。如果能开发出挥发性高，在非加热条件...     

1－（1－H－苯并三唑－1－乙酰基）－4－（邻氯苯甲酰基）氨基硫脲（Ⅴ）及其噻二唑衍生物（Ⅵ）的合成

１－（１－Ｈ－苯并三唑－１－乙酰基）－４－（邻氯苯甲酰基）氨基硫脲（Ⅴ）及其噻二唑衍生物（Ⅵ）的合成魏太保，陈继畴，张有明，李清河，陈真吉（西北师范大学化学系，兰州７３００７０）三唑类化合物是一类新型的植物生长调节剂。这类化合物能够控制植物生长，增加...     

烷基膦酸二烷基酯的固—液相转移催化合成及其阻燃性能

烷基膦酸二烷基酯的固－液相转移催化合成及其阻燃性能王筱梅＊杨平蔡庆华鲍猛（山东建筑材料工业学院应用化学系济南２５００２２）关键词烷基膦酸二烷基酯，合成，相转移催化，阻燃性１９９６－０８－１２收稿，１９９７－０３－０３修回烷基膦酸二烷基酯是一类具有实用...     

Saturated Nitrogen-containing Heterocycles. 20. Catalytic Reduction of N-Hydroxyethylpyridinium and Quinolinium Salts

Previously unknown N-(2-hydroxyethyl)perhydroquinolines and N-(2-hydroxyethyl)piperidines were synthesized by catalytic reduction of N-(2-hydroxyethyl)tetrahydroquinolinium and N-(2-hydroxyethyl)tetrahydropyridinium tetrafluoroborates. A scheme for the formation of the hydrogenation products is presented.     

A novel route to poly(2-hydroxyethyl methacrylate) and its amphiphilic block copolymers

The vinyl of the ester group of 2-vinyloxyethyl methacrylate was first selectively reacted with acetic acid to obtain 2-[1-(acetoxy)ethoxy]ethyl methacrylate ( 2 ). This protected monomer was subjected to anionic polymerization in tetrahydrofuran at −60°C in the presence of LiCl, using 1,1-diphenylhexyllithium as initiator. The molecular weight of the polymer could thus be controlled and a narrow molecular weight distribution obtained. The protecting group, 1-(acetoxy)ethyl, could be easily eliminated (by quenching the polymerization reaction with methanol and water) to generate poly(2-hydroxyethyl methacrylate) (poly(HEMA)). Block copolymers were also prepared by the sequential anionic polymerization of MMA and 2 or styrene and 2 . They possess narrow molecular weight distributions, and controlled molecular weights and compositions. © 1998 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 36: 1865–1872, 1998     

Electrospinning of the hydrophilic poly (2-hydroxyethyl methacrylate) and its copolymers with 2-ethoxyethyl methacrylate

The goal was to electrospin 2-hydroxyethyl methacrylate — based biocompatible polymers and prepare submicron fibres (nanofibers) for biomedicinal applications. Syntheses of poly(2-hydroxyethyl methacrylate) (HEMA) and its copolymer with 2-ethoxyethyl methacrylate (EOEMA), and their characterization by viscometry and molecular weight are described. Their relation to electrospinning is discussed. Electrospinning of HEMA homopolymer from water-ethanol is successful for molecular weights 6.31 × 10⁵ and 1.80 × 10⁶ g/mol. Electrospinning of HEMA/EOEMA copolymers is feasible from ethanol.      

Polymerization of acrylates by atom transfer radical polymerization. Homopolymerization of 2-hydroxyethyl acrylate

The application of atom transfer radical polymerization (ATRP) to the homopolymerization of 2-hydroxyethyl acrylate, a functional monomer, is reported. The polymerizations exhibit first-order kinetics, and molecular weights increase linearly with conversion. Polydispersities remain low throughout the polymerization (M_w/M_n ≈ 1.2). Reactions were conducted in bulk and in 1 : 1 (by volume) aqueous solution; the latter demonstrates the resilience of ATRP to protic media. Analysis of poly(2-hydroxyethyl acrylate) by MALDI-MS and ¹H-NMR shows M_n,exp to be much closer to M_n,th than those observed by SEC using polystyrene standards. © 1998 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 36: 1417–1424, 1998     

Synthesis and characterization of poly(butylene terephthalates) modified by hydroquinone bis(2-hydroxyethyl)ether

A series of thermoplastic poly(butylene-co-hydroquinone bis(2-hydroxyethyl)ether terephthalates) (PBHT), with different molar ratios of hydroquinone bis(2-hydroxyethyl)ether (HQEE)/1,4-butanediol 9/91, 18/82 and 27/73, were synthesized via melt polycondensation. The compositions, thermodynamics and crystallization properties of the obtained copolyesters were characterized in detail by ¹H NMR, differential scanning calorimeters (DSC), thermogravimetric analysis (TGA) and X-ray diffraction (XRD). These results showed that the PBHTs were successfully synthesized, and the incorporation of the HQEE group significantly improved thermal properties of the polymers. However, HQEE did not change the crystal structure of PBT. The T_m values of the copolymers decreased (from 208?°C to 174?°C) with increasing content of HQEE segments, on the contrary, T_g values increased (from 37?°C to 43?°C). The temperatures for 5% weight loss did not decrease and appeared at a range of 373–377?°C.     

甲基丙烯酸羟乙酯改性水性聚氨酯乳液的制备及性能

采用种子溶胀乳液聚合法,以水性聚氨酯为种子,甲基丙烯酸羟乙酯、甲基丙烯酸甲酯和丙烯酸丁酯为单体制备水性聚氨酯丙烯酸酯复合乳液,考察了甲基丙烯酸羟乙酯含量对复合乳液的T型剥离、胶膜的硬度、耐水性和力学性能的影响。结果表明,随着甲基丙烯酸羟乙酯含量的增加,复合乳液的T型剥离强度、胶膜的硬度和拉伸强度增大,胶膜的耐水性先增大后减小,断裂伸长率有所降低,适宜的甲基丙烯酸羟乙酯用量为3%。     

聚甲基丙烯酸羟乙酯树脂对胆红素的吸附研究

本文通过水相悬浮聚合制备了大孔交联聚甲基丙烯酸羟乙酯（PHEMA）树脂，研究了PHEMA树脂以及用乙醇胺功能基化后的PHEMA树脂对胆红素的吸附性能。结果表明，PHEMA树脂对胆红素的吸附性能受树脂孔结构，吸附温度，离子强度以及溶液中白蛋白的影响。该类吸附剂对胆红素有良好的吸附性能，其中用乙醇胺功能基化的树脂表现出更好的吸附能力。     

纳米TiO_2表面有机化改性的研究

本文依次采用2,4-甲苯二异氰酸酯(TDI)和丙烯酸羟乙酯(HEA)对纳米TiO2表面进行有机化改性,通过FT-IR、激光粒度分析和分散性测试表征其表面的结构并对改性前后的性能进行了比较.结果表明,TDI- HEA与TiO2表面的羟基发生了反应,表面化学键接的TDI-HEA量在40℃较20℃高,并随TDI-HEA/TiO2摩尔比的增大迅速增加,当摩尔比达0.4时趋于平缓,达到10.46%.在非极性有机溶剂中,改性后的TiO2分散性较未改性时有了明显的提高.     

对-（β-羟乙基砜）苯胺的电化学合成

本文研究了以对-硝基苯基-β-羟乙基砜为原料在铅板电极上电化学还原制备对-（β-羟乙基砜）苯胺的反应,探究电流密度、通电量、温度和硫酸浓度对电流效率和产率的影响。在最优条件下（电流密度300 A·m^-2,理论通电量6.0 F·mol^-1,温度70℃,硫酸浓度1.5 mol·L^-1）,该反应的电流效率达到92.7%,产率达到93.0%。在该最优条件的基础上向电解液中加入质量分数2.0%的硫酸钛可将产率提升至97.8%,硫酸钛的引入间接缓解了反应后期原料扩散速率慢的问题。